KR20100093020A - Rotary cutter for rounding and chamfering - Google Patents

Rotary cutter for rounding and chamfering Download PDF

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Publication number
KR20100093020A
KR20100093020A KR1020100075381A KR20100075381A KR20100093020A KR 20100093020 A KR20100093020 A KR 20100093020A KR 1020100075381 A KR1020100075381 A KR 1020100075381A KR 20100075381 A KR20100075381 A KR 20100075381A KR 20100093020 A KR20100093020 A KR 20100093020A
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South Korea
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chamfering
blade
edge
rotary cutter
cutting
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KR1020100075381A
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Korean (ko)
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KR101179164B1 (en
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장두한
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장두한
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/12—Trimming or finishing edges, e.g. deburring welded corners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2220/00—Details of milling processes
    • B23C2220/16—Chamferring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2270/00—Details of milling machines, milling processes or milling tools not otherwise provided for
    • B23C2270/02—Use of a particular power source
    • B23C2270/022—Electricity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2270/00—Details of milling machines, milling processes or milling tools not otherwise provided for
    • B23C2270/02—Use of a particular power source
    • B23C2270/027—Pneumatics

Abstract

PURPOSE: A chamfering rotary cutter is provided to perform a chamfering process on the edge of a steel plate using a second edge if a first edge is worn away and the cutting power of the first edge is reduced. CONSTITUTION: A chamfering rotary cutter(1) is formed in the shape of a circular truncated cone. The chamfering cutter comprises a shaft insertion hole(2) and multiple cutting edge units(3). The shaft insertion hole passes through the central part. A key groove(2a) is formed on one side of the inner circumference of the shaft insertion hole. Multiple cutting edge units are formed on the outer circumference. The cutting edge unit is composed of a first edge(3a) and a second edge(3b). The first edge and the second edge are alternately formed.

Description

면취용 회전커터{Rotary cutter for rounding and chamfering}Rotary cutter for rounding and chamfering

본 발명은 에어공구나 전동공구에 장착되어 사용되는 면취용 회전커터에 관한 것으로, 보다 상세하게는 원뿔대형상으로 이루어지며 중앙부에는 내주면일측에 키홈이 형성된 축삽입공이 관통되고 외주면에는 복수개의 절삭날부가 형성되는 면취용 회전커터를 구성하되, 상기 복수개의 절삭날부를 O.05 ~ 0.20mm의 높이차를 갖는 1차날과 2차날이 교대로 형성되도록 구성함으로써, 철판의 모서리부분에 대한 면취작업시 2차날보다 높이가 높게 형성된 1차날을 이용하여 철판의 모서리부분에 대한 면취가공을 하고, 1차날이 마모되어 절삭력이 현저히 저하될 경우 1차날보다 높이가 낮게 형성된 2차날을 이용하여 철판의 모서리부분에 대한 면취가공을 계속할 수 있게 하여 하나의 회전커터를 1, 2차에 걸쳐 장기간 사용할 수 있게 하므로 사용수명을 대폭 연장시킬 수 있도록 하는 면취용 회전커터에 관한 것이다.The present invention relates to a chamfering rotary cutter used to be mounted to an air tool or a power tool, and more specifically, is made of a truncated cone shape, the center portion of the inner circumferential surface is inserted through the shaft insertion hole formed on the inner peripheral surface and a plurality of cutting blades on the outer peripheral surface When forming a chamfering rotary cutter to be formed, the plurality of cutting blades by forming a primary blade and a secondary blade having a height difference of O.05 ~ 0.20mm alternately, when chamfering the corner portion of the iron plate 2 Chamfering is performed on the edge of the iron plate using the primary blade formed higher than the blade, and if the cutting force is significantly reduced due to the wear of the primary blade, the edge of the iron plate is formed by using the secondary blade formed lower than the primary blade. Long life can be extended by allowing one rotary cutter to be used for a long time over the first and second stages by continuing the chamfering process It relates to a chamfering rotary cutter to be made.

일반적으로 조선소 등에서 철판을 절단한 후에는 연마디스크가 장착된 그라인더를 이용하여 절단된 철판의 날카로운 모서리부분을 연삭하여 면취가공하게 되는데, 이러한 연마디스크를 이용한 면취작업은 시간과 노력이 많이 소요됨에 따라 작업성이 현저히 저하되는 문제점이 있었다.In general, after cutting a steel plate in a shipyard, it is chamfered by grinding the sharp edges of the cut steel plate using a grinder equipped with an abrasive disc, and the chamfering work using such an abrasive disc takes much time and effort. There was a problem that workability is significantly reduced.

이러한 문제점을 해소하기 위하여 종래에는 철판의 날카로운 모서리부분을 연마디스크로 연삭하는 대신에 회전커터로 절삭하여 면취가공하는 방법이 안출된 바 있었다.In order to solve this problem, conventionally, a method of chamfering by cutting with a rotary cutter has been devised instead of grinding a sharp edge of an iron plate with an abrasive disc.

이와 같은 회전커터를 이용한 면취가공방법에 사용되고 있는 종래의 면취용 회전커터(10)는 도 1에 도시되어 있는 바와 같이 원뿔대형상으로 형성되며 중앙부에는 내주면일측에 키홈이 형성된 축삽입공이 관통형성되고 외주면에는 복수개의 절삭날부(10a)가 형성되도록 구성된다.Conventional chamfering rotary cutter 10 used in the chamfering processing method using such a rotary cutter is formed in the shape of a truncated cone as shown in Figure 1 in the central portion of the inner circumferential surface is formed through the shaft insertion hole formed through the key groove on the outer peripheral surface It is comprised so that the some cutting edge part 10a may be formed.

상기와 같이 구성되는 종래의 면취용 회전커터(10)는 중앙부에 형성된 축삽입공에 전동공구나 에어공구(20)의 회전축이 끼워지도록 삽입한 후 축삽입공의 내주면일측에 형성된 키홈과 회전축의 외주면일측에 형성된 키홈을 맞추어 커터고정용 키를 삽입한 다음 회전축의 중앙부에 형성된 볼트체결공에 커터고정볼트를 체결하여 견고하게 고정하므로써 전동공구나 에어공구에 간편하게 장착하여 사용할 수 있게 될 뿐만 아니라, 회전축에 의해 고속으로 회전하면서 철판(30)의 날카로운 모서리부분을 신속하게 절삭가공할 수 있게 되므로 작업성을 대폭 향상시킬 수 있게 된다.Conventional chamfering rotary cutter 10 configured as described above is inserted into the rotating shaft of the power tool or air tool 20 in the shaft insertion hole formed in the center portion of the key groove and the rotating shaft formed on one side of the inner peripheral surface of the shaft insertion hole By inserting the key for fixing the cutter by aligning the key groove formed on one side of the outer circumferential surface, and fastening the cutter fixing bolt firmly to the bolt fastening hole formed at the center of the rotating shaft, it can be easily mounted and used on an electric tool or an air tool. Rotating at a high speed by the rotating shaft can quickly cut the sharp edge portion of the iron plate 30 can greatly improve the workability.

그러나, 상기한 바와 같은 종래의 면취용 회전커터(10)는 고속으로 회전하면서 철판(30)의 날카로운 모서리부분을 신속하게 절삭가공할 수 있게 되므로 작업성을 대폭 향상시키는 효과는 있었으나, 절삭날부(10a)가 쉽게 마모됨에 따라 절삭력이 현저히 저하됨으로 인하여 사용수명이 짧은 문제점이 있었다.However, the conventional chamfering rotary cutter 10 as described above is able to quickly cut the sharp edge portion of the iron plate 30 while rotating at a high speed, thereby greatly improving workability, but cutting edge portion ( As 10a) is easily worn, there is a problem that the service life is short because the cutting force is significantly reduced.

본 발명은 상기의 문제점을 해결하기 위한 것으로서, 원뿔대형상으로 이루어지며 중앙부에는 내주면일측에 키홈이 형성된 축삽입공이 관통되고 외주면에는 복수개의 절삭날부가 형성되는 면취용 회전커터를 구성하되, 상기 복수개의 절삭날부를 O.05 ~ 0.20mm의 높이차를 갖는 1차날과 2차날이 교대로 형성되도록 구성함으로써, 철판의 모서리부분에 대한 면취작업시 2차날보다 높이가 높게 형성된 1차날을 이용하여 철판의 모서리부분에 대한 면취가공을 하고, 1차날이 마모되어 절삭력이 현저히 저하될 경우 1차날보다 높이가 낮게 형성된 2차날을 이용하여 철판의 모서리부분에 대한 면취가공을 계속할 수 있게 하여 하나의 회전커터를 1, 2차에 걸쳐 장기간 사용할 수 있게 하므로 사용수명을 대폭 연장시킬 수 있도록 하는 것을 기술적 과제로 한다.The present invention is to solve the above problems, consisting of a truncated cone shape and the central portion of the inner circumferential surface of the axial insertion hole formed with a key groove is penetrated and the outer circumferential surface constitutes a chamfering rotary cutter, a plurality of cutting blades are formed, The cutting blades are formed so that the primary blades and the secondary blades alternately have a height difference of 0.05 to 0.20 mm, so that when the chamfering work is performed on the corners of the iron plate, When chamfering is performed on the edge part and the cutting force decreases significantly due to the wear of the primary blade, one rotary cutter can be used by continuing the chamfering on the corner part of the iron plate by using the secondary blade formed lower than the primary blade. The technical task is to allow a long-term use over the first and second periods, thereby significantly extending the service life.

상기의 기술적 과제를 달성하기 위한 본 발명은 원뿔대형상으로 이루어지며 중앙부에는 내주면일측에 키홈이 형성된 축삽입공이 관통되고 외주면에는 복수개의 절삭날부가 형성되는 면취용 회전커터에 있어서, 상기 복수개의 절삭날부는 O.05 ~ 0.20mm의 높이차를 갖는 1차날과 2차날이 교대로 형성되도록 구성된 것을 특징으로 한다.In the present invention for achieving the above technical problem is made in the shape of a truncated cone in the center portion of the inner circumferential surface of the chamfering hole through which the axial insertion hole is formed and a plurality of cutting edges are formed on the outer peripheral surface, the plurality of cutting edges The part is characterized in that the primary blade and the secondary blade having a height difference of 0.05 ~ 0.20mm are configured to be formed alternately.

상기한 바와 같이 본 발명에 의한 면취용 회전커터는 외주면에 형성되는 복수개의 절삭날부가 O.05 ~ 0.20mm의 높이차를 갖는 1차날과 2차날로 교대로 형성되도록 구성됨으로써, 철판의 모서리부분에 대한 면취작업시 2차날보다 높이가 높게 형성된 1차날을 이용하여 철판의 모서리부분에 대한 면취가공을 하고, 1차날이 마모되어 절삭력이 현저히 저하될 경우 1차날보다 높이가 낮게 형성된 2차날을 이용하여 철판의 모서리부분에 대한 면취가공을 계속할 수 있게 되어 하나의 회전커터를 1, 2차에 걸쳐 장기간 사용할 수 있게 되므로 사용수명을 대폭 연장시킬 수 있게 되는 효과가 있다.As described above, the chamfering rotary cutter according to the present invention is configured such that a plurality of cutting blades formed on the outer circumferential surface are alternately formed with a primary blade and a secondary blade having a height difference of 0.05 to 0.20 mm, thereby forming an edge portion of the iron plate. When chamfering work for chamfering using the primary blade formed higher than the second blade chamfered to the edge of the iron plate, if the primary blade is worn and the cutting force is significantly reduced using the secondary blade formed lower than the primary blade It is possible to continue the chamfering process for the corner portion of the iron plate it is possible to use a single rotary cutter for a long time over the first and second, it is effective to significantly extend the service life.

도 1은 종래기술에 의한 면취용 회전커터의 사용상태를 나타내는 설명도.
도 2는 본 발명에 의한 면취용 회전커터를 나타내는 사시도.
도 3은 본 발명에 의한 면취용 회전커터를 나타내는 평면도.
도 4는 본 발명에 의한 면취용 회전커터의 사용상태를 나타내는 설명도.1 is an explanatory view showing a state of use of the chamfering rotary cutter according to the prior art.
Figure 2 is a perspective view showing a chamfering rotary cutter according to the present invention.
Figure 3 is a plan view showing a rotary cutter for chamfering according to the present invention.
4 is an explanatory view showing a state of use of the chamfering rotary cutter according to the present invention.

이하, 상기의 목적을 달성하기 위한 본 발명을 도 2 내지 도 4를 참조하여 상세히 설명하면 다음과 같다.Hereinafter, the present invention for achieving the above object will be described in detail with reference to FIGS. 2 to 4.

본 발명에 의한 면취용 회전커터는 도 2와 도 3에 도시되어 있는 바와 같이, 원뿔대형상으로 이루어지며 중앙부에는 내주면일측에 키홈(2a)이 형성된 축삽입공(2)이 관통되고 외주면에는 복수개의 절삭날부(3)가 형성되는 면취용 회전커터(1)에 있어서, 상기 복수개의 절삭날부(3)는 O.05 ~ 0.20mm의 높이차를 갖는 1차날(3a)과 2차날(3b)이 교대로 형성되도록 구성되는 것을 특징으로 한다.2 and 3, the chamfering rotary cutter according to the present invention has a truncated conical shape, and a shaft insertion hole 2 in which a key groove 2a is formed at one side of the inner circumferential surface thereof is penetrated and a plurality of outer peripheral surfaces thereof are formed. In the chamfering rotary cutter 1 in which the cutting edge portion 3 is formed, the plurality of cutting edge portions 3 have a primary blade 3a and a secondary blade 3b having a height difference of 0.05 to 0.20 mm. Characterized in that formed alternately.

이 때, 상기 복수개의 절삭날부(3)를 O.05 ~ 0.20mm의 높이차를 갖는 1차날(3a)과 2차날(3b)이 교대로 형성되도록 구성한 이유는, 철판의 모서리부분에 대한 면취작업시 2차날(3b)보다 높이가 높게 형성된 1차날(3a)을 이용하여 철판의 모서리부분에 대한 면취가공을 하고, 1차날(3a)이 마모되어 절삭력이 현저히 저하될 경우 1차날(3a)보다 높이가 낮게 형성된 2차날(3b)을 이용하여 철판의 모서리부분에 대한 면취가공을 계속할 수 있게 하여 하나의 회전커터(1)를 1, 2차에 걸쳐 장기간 사용할 수 있게 하므로 사용수명을 대폭 연장시킬 수 있도록 하기 위함이다.In this case, the plurality of cutting edges 3 are configured to alternately form the primary blade 3a and the secondary blade 3b having a height difference of 0.05 mm to 0.20 mm. When working, chamfering is performed on the edge of the iron plate using the primary blade 3a formed higher than the secondary blade 3b, and the primary blade 3a is worn when the primary blade 3a is worn and the cutting force is significantly reduced. By using the secondary blade (3b) formed with a lower height, it is possible to continue the chamfering process for the corner portion of the iron plate, so that one rotary cutter (1) can be used for a long time over the first and second periods, thereby greatly extending the service life. To make it possible.

그리고, 상기 절삭날부(3)를 구성하는 1차날(3a)과 2차날(3b)의 높이차를 O.05 ~ 0.20mm로 한정한 이유는, 도 3에 도시되어 있는 바와 같이 1차날(3a)의 높이를 H1, 2차날(3b)의 높이를 H2라 할 때, 1차날(3a)과 2차날(3b)의 높이차(H1 - H2)를 O.05mm이하로 할 경우에는 1차날(3a)과 2차날(3b)의 높이차가 미미하여 철판의 모서리부분에 대한 면취가공시 면취용 회전커터(1)의 철판의 모서리부분에 밀착시키는 상태에 따라 1차날(3a)과 2차날(3b)이 철판의 모서리부분에 동시에 접촉하게 되는 일이 발생하게 됨에 따라 1차날(3a)과 2차날(3b)이 동시에 마모되므로 절삭날부(3)를 1차날(3a)과 2차날(3b)로 형성한 의미가 없게 되며, 또 1차날(3a)과 2차날(3b)의 높이차(H1 - H2)를 O.20mm이상으로 할 경우에는 1차날(3a)이 완전히 마모되어 절삭력이 현저히 저하된 상태보다 2차날(3b)의 높이가 더 낮게 형성됨에 따라 1차날(3a)이 마모된 이후에도 2차날(3b)에 의한 절삭이 이루어지지 않게 되므로 회전커터로서의 기능을 상실하게 되기 때문이다.The reason why the height difference between the primary blades 3a and the secondary blades 3b constituting the cutting edge portion 3 is 0.05 mm to 0.20 mm is as shown in FIG. 3. When the height of H1 and the height of the secondary blade 3b is H2, the height difference (H1-H2) between the primary blade 3a and the secondary blade 3b is 0.15 mm or less. The height difference between 3a) and the secondary blade (3b) is small, the first blade (3a) and the secondary blade (3b) depending on the state of close contact with the corner of the iron plate of the chamfering rotary cutter (1) when chamfering the corner portion of the iron plate As the first edge 3a and the second blade 3b are worn at the same time as the edge portion of the iron plate is simultaneously brought into contact, the cutting edge portion 3 is formed of the primary blade 3a and the secondary blade 3b. If the height difference (H1-H2) between the primary blades 3a and the secondary blades 3b is 0.2 mm or more, the primary blades 3a are completely worn out and the cutting force is significantly reduced. Lower height of secondary blade (3b) than Is because even after the first chanal (3a) is formed, so wear with no support, the cutting by the second chanal (3b) made to lose the function as a rotary cutter.

아울러, 본 발명에 의한 면취용 회전커터는 1차날(3a)과 2차날(3b)이 대칭을 이루도록 절삭날부(3)의 개수를 6개, 8개, 10개, 12개 ‥‥와 같이 6개이상의 짝수로 형성하는 것이 바람직하다.In addition, in the rotary cutter for chamfering according to the present invention, the number of cutting edge parts 3 is 6, 8, 10, 12 so that the primary blade 3a and the secondary blade 3b are symmetrical. It is preferable to form more than an even number.

상기와 같이 구성되는 본 발명에 의한 면취용 회전커터의 사용 및 작용관계를 설명하면 다음과 같다.Referring to the use and working relationship of the chamfering rotary cutter according to the present invention configured as described above are as follows.

본 발명에 의한 면취용 회전커터는 도 4에 도시되어 있는 바와 같이 중앙부에 형성된 축삽입공(2)에 전동공구나 에어공구(20)의 회전축이 끼워지도록 삽입한 후 축삽입공(2)의 내주면일측에 형성된 키홈(2a)과 회전축의 외주면일측에 형성된 키홈을 맞추어 커터고정용 키를 삽입한 다음 회전축의 중앙부에 형성된 볼트체결공에 커터고정볼트를 체결하여 견고하게 고정하므로써 전동공구나 에어공구(20)에 간편하게 장착할 수 있게 된다.The chamfering rotary cutter according to the present invention is inserted into the shaft insertion hole (2) formed in the center portion as shown in Figure 4 so that the rotary shaft of the power tool or air tool 20 is inserted into the shaft insertion hole (2) Insert the cutter fixing key by matching the key groove 2a formed on one side of the inner circumferential surface with the key groove formed on one side of the outer circumferential surface of the rotating shaft, and then tighten the cutter fixing bolt to the bolt fastening hole formed at the center of the rotating shaft to securely fix the electric tool or air tool. It becomes possible to attach to 20 easily.

이와 같이 전동공구나 에어공구(20)의 회전축에 면취용 회전커터(1)를 견고하게 장착한 상태에서 전동공구나 에어공구(20)을 가동시키게 되면 회전축에 장착된 면취용 회전커터(1)가 고속으로 회전하게 되고, 이렇게 고속으로 회전하는 면취용 회전커터(1)를 가공하고자 하는 철판(30)의 모서리부분에 접촉시키게 되면, 상대적으로 돌출되어 있는 절삭날부(3)의 1차날(3a)이 철판(30)의 모서리부분에 먼저 접촉하게 되면서 1차날(3a)에 의해 철판(30)의 모서리부분을 용이하게 절삭가공할 수 있게 된다.As described above, when the power tool or the air tool 20 is operated in a state where the chamfering rotary cutter 1 is firmly mounted on the rotary shaft of the power tool or the air tool 20, the chamfering rotary cutter 1 mounted on the rotary shaft is provided. Is rotated at a high speed, and when the chamfered rotary cutter 1 which rotates at a high speed is brought into contact with the corner portion of the iron plate 30 to be processed, the primary blade 3a of the relatively protruding cutting edge 3 The first contact with the corner portion of the iron plate 30 can be easily cut the corner portion of the iron plate 30 by the primary blade (3a).

이 때, 상기 절삭날부(3)의 2차날(3b)은 1차날(3a)보다 높이가 상대적으로 낮게 형성되어 있기 때문에 1차날(3a)에 의한 절삭가공시 철판(30)의 모서리부분에 전혀 접촉되지 않게 된다. 따라서 상기 절삭날부(3)의 1차날(3a)에 의한 절삭가공시에는 2차날(3b)에 의한 절삭이 전혀 이루어지지 않게 되므로 2차날(3b)는 전혀 마모되지 않게 된다.At this time, since the secondary blade (3b) of the cutting edge portion 3 is formed relatively lower than the primary blade (3a) at the edge of the iron plate 30 at the time of cutting by the primary blade (3a) at all No contact is made. Therefore, since the cutting by the secondary blade 3b is not performed at all when the cutting by the primary blade 3a of the cutting blade portion 3, the secondary blade 3b is not worn at all.

이와 같이 철판(30)의 모서리부분에 대한 면취작업시 2차날(3b)보다 높이가 높게 형성된 1차날(3a)을 이용하여 철판(30)의 모서리부분에 대한 면취가공을 계속 하다보면, 1차날(3a)이 점차 마모되어 절삭력이 현저히 저하되면서 1차날(3a)의 높이가 2차날(3b)의 높이와 같아지게 되는 시기가 오게 되는데, 이렇게 1차날(3a)이 점차 마모되면서 1차날(3a)의 높이가 2차날(3b)의 높이와 같아지게 되면, 1차날(3a)에 의한 절삭은 더 이상 이루어지지 않게 되고 전혀 마모되지 않은 2차날(3b)에 의한 절삭이 시작되므로 철판(30)의 모서리부분에 대한 면취가공을 계속 수행할 수 있게 된다.In this way, when chamfering the corner portion of the iron plate 30 using the primary blade (3a) formed higher than the second blade (3b) to continue to chamfer the corner portion of the iron plate 30, As (3a) is gradually worn and the cutting force is significantly reduced, the time comes when the height of the primary blade (3a) becomes the same as the height of the secondary blade (3b), and as the primary blade (3a) gradually wears, the primary blade (3a) When the height of) becomes equal to the height of the secondary blade 3b, the cutting by the primary blade 3a is no longer made and the cutting by the secondary blade 3b, which is not worn at all, is started, so that the steel plate 30 Chamfering of the corners of the chamfering can be continued.

아래의 표1은 1차날(3a)과 2차날(3b)의 높이차에 따른 면취용 회전커터의 가공거리를 표로서 정리한 것이다.Table 1 below summarizes the machining distance of the chamfering rotary cutter according to the height difference between the primary blade 3a and the secondary blade 3b.

구분division 높이차(mm)Height difference (mm) 가공거리(m)Machining distance (m) 실시예 1Example 1 00 105105 실시예 2Example 2 0.050.05 143143 실시예 3Example 3 0.100.10 201201 실시예 4Example 4 0.150.15 193193 실시예 5Example 5 0.200.20 168168 실시예 6Example 6 0.250.25 108108

※ 가공거리(m) : 면취용 회전커터의 사용수명을 거리로 나타낸 것.※ Machining distance (m): The service life of the chamfering rotary cutter in distance.

상기 실시예 1은 절삭날부가 1차날과 2차날로 분할되지 않은 종래의 면취용 회전커터를 나타낸다.Example 1 shows a conventional chamfering rotary cutter in which the cutting edge is not divided into the primary blade and the secondary blade.

상기 실시예 2 내지 실시예 5는 본 발명에 의한 면취용 회전커터, 즉 복수개의 절삭날부(3)를 O.05 ~ 0.20mm의 높이차를 갖는 1차날(3a)과 2차날(3b)이 교대로 형성되도록 한 것으로서, 상기 표1에서 보는 바와 같이 본 발명에 의한 면취용 회전커터인 실시예 2 내지 실시예 5가 절삭날부가 1차날과 2차날로 분할되지 않은 종래의 면취용 회전커터인 실시예 1보다 가공거리, 즉 사용수명이 대폭 향상됨을 알 수 있다.In Examples 2 to 5, the chamfering rotary cutter according to the present invention, that is, the plurality of cutting blades 3, the primary blade (3a) and secondary blade (3b) having a height difference of 0.05 ~ 0.20mm Alternately, as shown in Table 1, Examples 2 to 5, which are the rotary cutters for chamfering according to the present invention, are the conventional chamfering rotary cutters in which the cutting edge is not divided into the primary blade and the secondary blade. It can be seen that the working distance, that is, the service life is significantly improved compared to Example 1.

상기 실시예 6은 1차날(3a)과 2차날(3b)의 높이차를 O.25mm로 형성한 것으로서, 이와 같이 1차날(3a)과 2차날(3b)의 높이차를 O.20mm이상으로 할 경우에는 1차날(3a)이 완전히 마모되어 절삭력이 현저히 저하된 상태보다 2차날(3b)의 높이가 더 낮게 형성됨에 따라 1차날(3a)이 마모된 이후에도 2차날(3b)에 의한 절삭이 이루어지지 않게 되므로 회전커터로서의 기능을 상실하게 된다.In Example 6, the height difference between the primary blade 3a and the secondary blade 3b is formed to be 0.25 mm. Thus, the height difference between the primary blade 3a and the secondary blade 3b is 0.2 mm or more. In this case, since the height of the secondary blade 3b is lower than the state in which the primary blade 3a is completely worn and the cutting force is significantly reduced, the cutting by the secondary blade 3b is not possible even after the primary blade 3a is worn out. Since it is not made, the function as a rotary cutter is lost.

상기한 바와 같이 본 발명에 의한 면취용 회전커터(1)는 외주면에 형성되는 복수개의 절삭날부(3)가 O.05 ~ 0.20mm의 높이차를 갖는 1차날(3a)과 2차날(3b)로 교대로 형성되도록 구성됨으로써, 철판(30)의 모서리부분에 대한 면취작업시 2차날(3b)보다 높이가 높게 형성된 1차날(3a)을 이용하여 철판(30)의 모서리부분에 대한 면취가공을 하고, 1차날(3a)이 마모되어 절삭력이 현저히 저하될 경우 1차날(3a)보다 높이가 낮게 형성된 2차날(3b)을 이용하여 철판(30)의 모서리부분에 대한 면취가공을 계속할 수 있게 되어 하나의 회전커터를 1, 2차에 걸쳐 장기간 사용할 수 있게 되므로 사용수명을 대폭 연장시킬 수 있게 된다.As described above, the chamfering rotary cutter 1 according to the present invention has a plurality of cutting edges 3 formed on the outer circumferential surface of the primary blade 3a and the secondary blade 3b having a height difference of 0.05 to 0.20 mm. It is configured to be formed alternately, the chamfering for the corner portion of the iron plate 30 using the primary blade (3a) formed higher than the second blade (3b) when chamfering the corner portion of the iron plate 30 When the primary blade 3a is worn out and the cutting force is significantly reduced, the chamfering of the edge portion of the iron plate 30 can be continued using the secondary blade 3b formed lower than the primary blade 3a. Since one rotary cutter can be used for a long time over the first and second stages, the service life can be greatly extended.

1 : 면취용 회전커터
2 : 축삽입공
2a : 키홈
3 : 절삭날부
3a : 1차날
3b : 2차날1: Chamfering Rotary Cutter
2: shaft insertion hole
2a: keyway
3: cutting edge
3a: 1st blade
3b: 2nd blade

Claims (1)

원뿔대형상으로 이루어지며 중앙부에는 내주면일측에 키홈(2a)이 형성된 축삽입공(2)이 관통되고 외주면에는 복수개의 절삭날부(3)가 형성되는 면취용 회전커터에 있어서,
상기 절삭날부(3)는 O.05 ~ 0.20mm의 높이차를 갖는 1차날(3a)과 2차날(3b)이 교대로 형성되도록 구성된 것을 특징으로 하는 면취용 회전커터.In the chamfered rotary cutter having a truncated cone shape, the shaft insertion hole (2) having a key groove (2a) formed on one side of the inner circumferential surface is passed through the center portion, and a plurality of cutting edges (3) are formed on the outer circumferential surface thereof.
The cutting edge portion (3) is chamfering rotary cutter, characterized in that the primary blade (3a) and the secondary blade (3b) having a height difference of 0.05 ~ 0.20mm is configured to be formed alternately.
KR1020100075381A 2010-08-04 2010-08-04 Rotary cutter for rounding and chamfering KR101179164B1 (en)

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WO2012094794A1 (en) * 2011-01-10 2012-07-19 Li Shiqing Composite milling cutter
WO2014007608A1 (en) * 2012-07-04 2014-01-09 HOFMAN, Jan, Enno Beveling cutter having helical edged blades and discharge grooves
US9782843B2 (en) 2013-06-21 2017-10-10 Thomas M. Dieckilman Beveling cutter having helical edged blades and discharge grooves
CN109865871A (en) * 2019-04-17 2019-06-11 杭州超尔切削工具有限公司 A kind of Multifunctional milling cutter

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KR102194478B1 (en) 2020-06-29 2020-12-23 김수영 The rotation cutter material for the hand-held chamfer

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JP2001328017A (en) 2000-05-24 2001-11-27 Shoda Techtron Corp Rotary tool

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012094794A1 (en) * 2011-01-10 2012-07-19 Li Shiqing Composite milling cutter
WO2014007608A1 (en) * 2012-07-04 2014-01-09 HOFMAN, Jan, Enno Beveling cutter having helical edged blades and discharge grooves
US9782843B2 (en) 2013-06-21 2017-10-10 Thomas M. Dieckilman Beveling cutter having helical edged blades and discharge grooves
CN109865871A (en) * 2019-04-17 2019-06-11 杭州超尔切削工具有限公司 A kind of Multifunctional milling cutter

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